Abstract
Abstract. The aim of this study was to investigate the variability of the water exchanges in the Curonian Lagoon based on the hydraulic regime and the atmospheric forcings. A finite element hydrodynamic model has been applied to the Curonian Lagoon to simulate the circulation patterns for 10 years. With the help of a transport–diffusion model, the salinity distribution and the renewal times of the Curonian Lagoon have been investigated when forced by river runoff, wind, and Baltic Sea level fluctuations. The hydrodynamic model has been validated using in situ salinity measurements. Model results show that the variability depends mainly on seasonal changes in hydrographic forcing and on the dominant wind regimes that prevail over the Curonian Lagoon. Exchanges between the southern and the northern part of the lagoon mostly depend on the wind forcing and are much less influenced by the river discharge. However, when looking at the water renewal time, the most important factor is the river discharge into the lagoon. Other physical forcings only marginally determine the renewal time, and not even ice cover is able to influence it. Even if ice cover strongly inhibits the exchanges between the southern and northern lagoon, it is basically not able to change the absolute value of the renewal times.
Subject
Cell Biology,Developmental Biology,Embryology,Anatomy
Reference29 articles.
1. Andutta, P. F., Ridd, P. V., Deleersnijder, E., and Prandle, D.: Contaminant
exchange rates in estuaries – New formulae accounting for advection and
dispersion, Prog. Oceanogr., 120, 139–153, 2014.
2. Bellafiore, D., Guarnieri, A., Grilli, F., Penna, P., Bortoluzzi, G.,
Giglio, F., and Pinardi, N.: Study of the hydrodynamical processes in the
Boka Kotorska Bay with a finite element model, Dynam. Atmos. Oceans, 52, 298–321, 2011.
3. Burchard, H. and Petersen, O.: Models of turbulence in the marine
environment – a comparative study of two equation turbulence models.
J. Mar. Syst., 21, 29–53, 1999.
4. Cardellicchio, N., Annicchiarico, C., Di Leo, A., Giandomenico, S., and
Spada, L.: The Mar Piccolo of Taranto: an interesting marineecosystem for the
environmental problems studies, Environ. Sci. Poll. Res., 1–7,
https://doi.org/10.1007/s11356-015-4924-6, 2015.
5. CEC: Directive 2000/60/EC of the European Parliament and of the
Council of 23 October 2000 establishing a framework for community action in
the field of water policy, J. Eur. Commun., L327, 1–73, 2000.